Polishing-head.



G. A. UNDEEN.

PoLIsHlNQ HEAD.

Patented Ag. 13, 1.912-

. usediJfo agretlengthfiof fill s'rav a. UNDEEN, oF PROCTOB.,vr VERMONT.

Il 2f/ whomfjthmay concern:` v Beit known' that I, GUSTAVA.=.UNDEE1 \Y', a" el haelt; of :kth nited V- States, Y residing 'at 'awsctor, ja' v Count-y of Rutland and State of *Vernionu have invented `'certain nmvand useflil Improvements in Polishing- H eads,of v hich they following is a specificaiom. 7

rials'toiimpart the propersurfaethereto.

The ,objeet of'thepresent nivent-ion is toso inon'nti-fthe;y stonesgin'the heads-:or wheels,- that e 'stones`nia`y.;.be`l1e1d.in vanyfposition4 desiredfiaybe d f easily re'move FQ; laundered-riding 10 haprgent iinenfin; ,refer-encara1tot@maidens-fret lowingrdesoriptionrand 'to thefaccornpanyingV drawings, in w Figurefl proved-poll. plan view' of;the=sa tion hereinafterreferred to;'and Fig..4 is a centralverticalsection taken on the line 4 4 oiFig. '2f'v -.f f

det

ian views-0f are tim; a 1 'FigizlQY-nis a bottom ings, 4similar parts are' casing 1. affordinoa mounting for the tones hereinafter referred to. The head 1 is closed on its top side withv the exception of' the central aperture, and is provided with the ordinary lugs 3." The head or ivheel is open on its lower side, and is provided with a series of radial Webs 4, which connect the hub :2 with the uter periphery of the wheel or head. On each side of each of the webs LL i spacing lock 5 is provided, which may be secured to the head or Wheel in any desired manner, it being immaterial whether members 5 be'constructed of Wood orl nit-tal, but preferably'the .former in order to secure lightness of the structure. At about Eze form of a wheel havnga hub 2, the head a central position in each quadrant formed f t formed with Wma! metal.

iiiven-tion'fr-relates` tof-polishing heads,l and v more .particularly-"to means ,for inount-.j

niej; lFigi# 3 isi a modifica-.f

.tis `3 all descrip# tion and lon the several-igures, of the drawreferred toby like i muslims-HEAD.

j 'iljifjfcati'on of- Letrtirs Patent A Patented Aug. 13, 1912.

an, ,appro.\'i1nately centrally .dispos-ed. screw threaded bore 7 extending through its interior, and through the bores of each of the vThe-'polishing:stones are formed as is shown in Fig'sf). and 47 that is, their operative surfaces 12 and tl1eir-sides"\vhich-he 'adja` cent Vto-the closed side ofv the Wheeler head 1 are parallel, but the two sides 13 converge,

By this-arrangement, the converging radial sides of the vI'iolishinigl; stones may closely engage `thecorresponding converging radlal' sides of, the

Wedge 'shaped blocks It will be obvious that as the screw threaded boltS is rotated the bolt being held in a fixed position longitudinallv` that the'ivedge.

shaped block mounted on ythebolt will be moved radially inwardly orv outwardly, so

ing stones, and securelyhold the same in place by forcing them against the spacing blocks 5. By'this means a very convenientl mounting 'of the polishing stones is obtained. The stones may be easily removed by loosening the wedges 6, and a feature of importance consists in the fact that the stones may be held in any desired vertical position with reference to the Wedges, that is to say, as the stones become Worn down through continued usage so that their depth is reduced to onethird or one-fourth of their original depth, they may still be firmly secured by means of the Wedges.l it being necessary that they be engaged by the Wedges onlv to a depthof about one-halt` aninch. Another advantage of the structure described, resides in the fact that the bolts which move the wedges are operated at the outer periphery ofthe head or Wheel l, by which provision it is easier to adjust the Wedges and it is not necessary by virtue of this construction to have any bolts or nuts on the top .side of the head 1, where obviously they would be in a disadvantageous position.

Lvi...manrs'rafrizs eATE'NT oFEIoE.

as to engage the sidesfof the adjacent polish- Y blocks are vin position, they will bear directlyv vthe bolt-headsv 10.

In the modified form ofl the invention shownin Fig..-3, instead of providingthe webs/1 and the adjacent'spacin blocks 5, I form a spacing memberlet, w ich will 'be preferably integrally formed with the body' of the head or wheel 1. This obviates the necessity of using the separate spacing 5 and when the polishing stonesll against the integral spacing member 14. Another feature of modified construct-ion shown in this figure is, that the bolt-heads are countersunk and for this purpose the outer e'riphery of the head'ofr -wheel'l is forme .withrecesses adapted to receive The latter may be graspedin .this position by means of a suitsaid 'means being v riphery of the casing.-

2. A polishing head, comprising a casing,`

' a series of Stones disposed in said' casing,

each of said stones consisting of a solid,

wedge-shaped block, a' series of wedges mounted in the casing, each of said wedges engaging a stone on eachconverging Vs1de' thereof, spacing blocks disposed between said stones against which portions/ of the stones bear, and threaded bolts passing through said Wedges to move the same radially inwardly and outwardly.

3'. A polishing head,` comprising a casing,

. pairs of stones adapted for insertion therein,

-of the stones bear.'

a series of wedges mounted in the easing adapted toengage the stones, means. for

vmoving the wedges radially inwardly and outwardly, and fixed spacing blocks disposed between said stones against which the sides 4. Ag polishing head, comprising :1 -circular-casing, pairs of stones dis osed 1nv said casing, .a fixed block disposed'Av etweeneach' pair of 'stones and againstwhich .one'side of each stone bears, a wedge arranged between the ston gage the'sides of the stoes,'and threaded" of. each pair and adaptedtj'en boltsmounted in 'the' said casing and, pass-v- I ing through said we'dgesto move 'the' same radially inwardlyand outwardly.

' 5. A polishing head, conrprislng'a ciricu-l i' lar 'caslng having a hub and closed at, one side, a plurality of polishingfstones radially disposed in saidcasing, each of s aidv .stones having two op osite'sides converging inwardly, radially disposed wedge shaped' Y' blocks disposed between said ffstones, each .adapted to' engage the converging* sides thereof, a rotatable threaded bolt Apassing through ea'ch of said vwedg'eshaped blocks' `and through said hub and the outer'perph ery of the 'casing to' move the'said blocks" .radially inwardly and outwardly, andixedgf spacing members arranged between 'saidf stones andl adaptedto engage-the sides of 752- '-being formed with'- recesses adapted toire-' the stones not` engaged by the wed e' shaped blocks, said outer 4periphery of. t ie caslng ceive the heads of th'iebolts.

.In 'testimonyl whereof I afixfmy signature Iin Vpresence of two witnesses.

GUSTAv A.l

Witnesses:

DUDLEY E. BURDINE, H. C. Rose. 

